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18. How can you save water at home?
Take shorter showers and fix leaky faucets.
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15. Why is the ozone layer important?
It protects living things from dangerous radiation.
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heart
Other team wins 5 points!
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star
Double points!
Okay!
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gift
Win 25 points!
Okay!
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baam
Lose 25 points!
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15
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20. What is the main message about protecting Earth?
Everyone must do their part to care for the environment.
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lifesaver
Give 25 points!
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rocket
Go to first place!
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rocket
Go to first place!
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baam
Lose 25 points!
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9. Why is the Amazon rainforest important?
It produces one-third of Earth's oxygen.
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1. What does the word "ecology" mean?
Ecology means "the study of the house," referring to studying Earth as home for all living things.
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12. What is overfishing?
Catching too many fish, which endangers species.
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10. What happens when forests are destroyed?
Animals lose homes and soil washes away.
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11. What fraction of Earth is covered by oceans?
Four-fifths of Earth is covered by oceans.
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8. What happened to tropical forests on four continents?
They were cut down for farming, leaving poor soil.
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2. Who created the term "ecology"?
The term was invented by German biologist Ernst Haeckel.
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7. How did the text show ecosystems are connected?
A bear depends on both forests and lakes for survival.
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16. How did people help the ozone layer?
By banning harmful chemicals.
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5. Why can't we stop all tree cutting?
Because we need wood and paper products, but must find a balance.
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boom
Lose 50 points!
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seesaw
Swap points!
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shark
Other team loses 25 points!
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thief
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